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A Hydrogen‐Bonded Hexagonal Buckybowl Framework

Abstract

A hydrogen‐bonded two‐dimensionally networked buckybowl architecture is presented. Two types of hexagonal network (HexNet) structures (CPSM‐1 and CPSM‐2) have been achieved based on a sumanene derivative (CPSM) possessing 4,4′‐dicarboxy‐o‐terphenyl groups in the periphery. CPSM‐1 has a waved HexNet structure with an alternate alignment of upward and downward bowls. CPSM‐2 has a bilayered HexNet structure composed of hamburger‐shaped dimers of the bowls. This demonstrates that non‐planar π‐systems can be networked two‐dimensionally by an appropriate supramolecular synthon to achieve structurally well‐defined unique bumpy π‐sheets. Furthermore, we revealed that CPSM‐2 undergoes anisotropic shrinking along the c axis by 11 % under high pressure conditions (970 MPa). The shrinkage is brought about by offset sliding between bumpy π‐surfaces of the bilayered HexNet sheets.

Ein Sumanenderivat mit 4,4′‐Dicarboxy‐o‐terphenyl‐Einheiten bildet zweierlei wasserstoffverbrückte hexagonale Schichtarchitekturen mit gekrümmten und welligen Oberflächen. Eine davon reagierte mit anisotropem Schrumpfen auf die Anwendung von hohem Druck.

Authors:   Ichiro Hisaki, Hideaki Toda, Hiroyasu Sato, Norimitsu Tohnai, Hidehiro Sakurai
Journal:   Angewandte Chemie
Volume:   129
edition:   48
Year:   2017
Pages:   15496
DOI:   10.1002/ange.201708115
Publication date:   26-Oct-2017
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